fix: print getConfig warnings (#4124)

Related to prisma/prisma-client-js#898

src/packages/client/src/__tests__/integration/happy/provider-array/.gitignore

@@ -0,0 +1 @@
+!dev.db

src/packages/client/src/__tests__/integration/happy/provider-array/schema.prisma

@@ -0,0 +1,37 @@
+datasource db {
+  provider = ["postgresql", "sqlite"]
+  url      = "file:./dev.db"
+  default  = true
+}
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+// / User model comment
+model User {
+  id      String   @id @default(uuid())
+  email   String   @unique
+  // / name comment
+  name    String?
+  posts   Post[]
+  profile Profile?
+}
+
+model Profile {
+  id     String  @id @default(cuid())
+  bio    String?
+  user   User    @relation(fields: [userId], references: [id])
+  userId String  @unique
+}
+
+model Post {
+  id        String   @id @default(cuid())
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+  published Boolean
+  title     String
+  content   String?
+  authorId  String?  @map("author")
+  author    User?    @relation(fields: [authorId], references: [id])
+}

src/packages/client/src/__tests__/integration/happy/provider-array/test.ts

@@ -0,0 +1,30 @@
+import { getTestClient } from '../../../../utils/getTestClient'
+
+test('provider-array', async () => {
+  const warnings: any[] = []
+  const oldWarn = console.warn
+  console.warn = (...args) => {
+    warnings.push(args)
+  }
+  const PrismaClient = await getTestClient()
+  const prisma = new PrismaClient()
+  const users = await prisma.user.findMany()
+  await prisma.$disconnect()
+  expect(users).toMatchInlineSnapshot(`
+    Array [
+      Object {
+        email: a@a.de,
+        id: 576eddf9-2434-421f-9a86-58bede16fd95,
+        name: Alice,
+      },
+    ]
+  `)
+  expect(warnings).toMatchInlineSnapshot(`
+    Array [
+      Array [
+        warn Using multiple providers is now deprecated. You should use a single provider instead. Read more at https://pris.ly/multi-provider-deprecation,
+      ],
+    ]
+  `)
+  console.warn = oldWarn
+})

src/packages/client/src/utils/getTestClient.ts

@@ -5,6 +5,7 @@ import {
   getConfig,
   extractPreviewFeatures,
   mapPreviewFeatures,
+  printConfigWarnings,
 } from '@prisma/sdk'
 import { getDMMF } from '../generation/getDMMF'
 import { promisify } from 'util'
@@ -28,6 +29,8 @@ export async function getTestClient(schemaDir?: string): Promise<any> {
   const schemaPath = await getRelativeSchemaPath(schemaDir)
   const datamodel = await readFile(schemaPath!, 'utf-8')
   const config = await getConfig({ datamodel, ignoreEnvVarErrors: true })
+  printConfigWarnings(config.warnings)
+
   const generator = config.generators.find(
     (g) => g.provider === 'prisma-client-js',
   )

src/packages/sdk/src/engineCommands.ts

@@ -15,6 +15,7 @@ const MAX_BUFFER = 1000_000_000
 export interface ConfigMetaFormat {
   datasources: DataSource[]
   generators: GeneratorConfig[]
+  warnings: string[]
 }
 
 export type GetDMMFOptions = {

src/packages/sdk/src/getGenerators.ts

@@ -29,6 +29,7 @@ import { extractPreviewFeatures } from './utils/extractPreviewFeatures'
 import { mapPreviewFeatures } from './utils/mapPreviewFeatures'
 import { engineVersions } from './getAllVersions'
 import { enginesVersion } from '@prisma/engines'
+import { printConfigWarnings } from './utils/printConfigWarnings'
 
 
 export type ProviderAliases = { [alias: string]: GeneratorPaths }
@@ -103,6 +104,8 @@ export async function getGenerators({
     ignoreEnvVarErrors: true,
   })
 
+  printConfigWarnings(config.warnings)
+
   // TODO: This needs a better abstraction, but we don't have any better right now
   const experimentalFeatures = mapPreviewFeatures(
     extractPreviewFeatures(config),

src/packages/sdk/src/index.ts

@@ -1,3 +1,4 @@
+
 export { pick } from './pick'
 
 export { keyBy } from './keyBy'
@@ -80,3 +81,5 @@ export {
   createDatabase,
   dropDatabase,
 } from './migrateEngineCommands'
+
+export { printConfigWarnings } from './utils/printConfigWarnings'

src/packages/sdk/src/utils/printConfigWarnings.ts

@@ -0,0 +1,8 @@
+import chalk from "chalk"
+
+export function printConfigWarnings(warnings: string[]) {
+  if (warnings && warnings.length > 0) {
+    const message = warnings.map(warning => `${chalk.yellow('warn')} ${warning}`).join('\n')
+    console.warn(message)
+  }
+}